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| author | Junaid Shahid <junaids@google.com> | 2019-01-03 17:14:28 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-12 19:19:05 +0100 |
| commit | 05fe997e30d439e3ff0c7e7e46499e9d41d98ba7 (patch) | |
| tree | 196c4cd7e0733c97f2e3be15eb7b33d9f4e47897 /Documentation | |
| parent | 82e77746f07db70367f66ef272256037d6415353 (diff) | |
| download | linux-stable-05fe997e30d439e3ff0c7e7e46499e9d41d98ba7.tar.gz linux-stable-05fe997e30d439e3ff0c7e7e46499e9d41d98ba7.tar.bz2 linux-stable-05fe997e30d439e3ff0c7e7e46499e9d41d98ba7.zip | |
kvm: Convert kvm_lock to a mutex
commit 0d9ce162cf46c99628cc5da9510b959c7976735b upstream.
It doesn't seem as if there is any particular need for kvm_lock to be a
spinlock, so convert the lock to a mutex so that sleepable functions (in
particular cond_resched()) can be called while holding it.
Signed-off-by: Junaid Shahid <junaids@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/virtual/kvm/locking.txt | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/Documentation/virtual/kvm/locking.txt b/Documentation/virtual/kvm/locking.txt index 1bb8bcaf8497..635cd6eaf714 100644 --- a/Documentation/virtual/kvm/locking.txt +++ b/Documentation/virtual/kvm/locking.txt @@ -15,8 +15,6 @@ The acquisition orders for mutexes are as follows: On x86, vcpu->mutex is taken outside kvm->arch.hyperv.hv_lock. -For spinlocks, kvm_lock is taken outside kvm->mmu_lock. - Everything else is a leaf: no other lock is taken inside the critical sections. @@ -169,7 +167,7 @@ which time it will be set using the Dirty tracking mechanism described above. ------------ Name: kvm_lock -Type: spinlock_t +Type: mutex Arch: any Protects: - vm_list |